/* Tidy Workbook site. Every value is a token from DESIGN.md. Change the token there first, then here. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper-50: #F6F0E6;
  --paper-100: #EAE2D4;
  --paper-300: #D5CAB8;
  --paper-700: #5A5448;
  --primary-100: #E3EFF5;
  --primary-300: #8DB7CF;
  --primary-500: #1C6387;
  --primary-700: #154560;
  --primary-900: #0E2A3B;
  --neutral-500: #8695A0;
  --neutral-900: #16222B;
  --accent-500: #B26A00;
  --success: #1E7B4B;
  --danger: #B3261E;
  --ease: cubic-bezier(0.2, 0, 0, 1);
  --font: Inter, 'Segoe UI', 'Helvetica Neue', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { color-scheme: light; }

body {
  margin: 0;
  background: var(--paper-50);
  color: var(--neutral-900);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: break-word;
}

h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }

ul, ol { padding: 0; list-style: none; }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 2px;
}

.wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 48px;
}

.skip {
  position: absolute;
  left: 16px;
  top: 16px;
  z-index: 2;
  padding: 8px 12px;
  background: var(--paper-50);
  color: var(--neutral-900);
  transform: translateY(-96px);
}

.skip:focus { transform: none; }

/* Type roles. The display size is the loudest thing on a page after the ink panel. */
.h1,
.h2,
.h3,
.fig {
  color: var(--primary-900);
  font-weight: 600;
}

.h1 {
  font-size: clamp(48px, 5.6vw, 80px);
  line-height: 1;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.h2 {
  font-size: clamp(30px, 3.6vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.h3 {
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.fig {
  font-size: clamp(48px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lead {
  max-width: 36em;
  color: var(--paper-700);
  font-size: 20px;
}

.small {
  color: var(--paper-700);
  font-size: 14px;
}

.link {
  color: var(--primary-500);
  text-underline-offset: 4px;
  transition: color 120ms var(--ease);
}

.link:hover { color: var(--primary-900); }

/* Buttons are square and filled. One per region. */
.btn {
  display: inline-block;
  padding: 16px 32px;
  border: 1px solid var(--primary-500);
  background: var(--primary-500);
  color: var(--paper-50);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-decoration: none;
  transition: background-color 120ms var(--ease), border-color 120ms var(--ease);
}

.btn:hover {
  border-color: var(--primary-900);
  background: var(--primary-900);
}

.btn--sm { padding: 8px 24px; }

/* Top bar. */
.bar { border-bottom: 1px solid var(--paper-300); }

.bar__in {
  display: flex;
  align-items: center;
  gap: 48px;
  padding-top: 12px;
  padding-bottom: 12px;
}

.logo {
  white-space: nowrap;
  color: var(--primary-900);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 32px;
  margin-right: auto;
}

.nav a {
  text-decoration: none;
  transition: color 120ms var(--ease);
}

.nav a:hover,
.nav a[aria-current="page"] { color: var(--primary-500); }

/* Hero: the claim on the left, the evidence on the right. */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero .lead { margin-top: 24px; }

.hero__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 32px;
  margin-top: 32px;
}

.hero .small { margin-top: 24px; }

/* The ink panel: the one bold element on the site. It always frames rows the add-on writes. */
.case {
  padding: 32px;
  background: var(--primary-900);
  color: var(--paper-50);
}

.case__head,
.case__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  color: var(--primary-300);
  font-size: 14px;
}

.case__head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--primary-700);
}

.case__ask {
  margin: 24px 0;
  color: var(--paper-50);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.bars__label {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--primary-300);
  font-size: 14px;
}

.bars__label b {
  color: var(--paper-50);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.bars i {
  display: block;
  height: 12px;
  margin: 4px 0 16px;
}

.bars .is-before {
  width: 100%;
  background: var(--neutral-500);
}

.bars .is-after {
  width: 65%;
  background: var(--primary-300);
}

.case__fig {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  margin-top: 8px;
  padding: 24px 0;
  border-top: 1px solid var(--primary-700);
  border-bottom: 1px solid var(--primary-700);
}

.case .fig { color: var(--paper-50); }

.case__foot { padding-top: 16px; }

.case__foot span:first-child { color: var(--paper-50); }

/* Facts strip under the hero. */
.strip {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 64px;
  align-items: center;
  padding-top: 24px;
  padding-bottom: 24px;
  border-top: 1px solid var(--primary-900);
}

.strip__say {
  max-width: 22em;
  color: var(--paper-700);
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.facts div {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-end;
}

.facts dt {
  color: var(--paper-700);
  font-size: 14px;
}

.facts dd {
  margin-bottom: 4px;
  color: var(--primary-900);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* Bands: one topic each. */
.band { padding: 96px 0; }

.band .lead { margin-top: 16px; }

.band--mid {
  background: var(--primary-500);
  color: var(--paper-50);
}

.band--alt { background: var(--paper-100); }

.band--ink {
  background: var(--primary-900);
  color: var(--paper-50);
}

.band--mid .h2,
.band--ink .h2 { color: var(--paper-50); }

.band--mid .lead { color: var(--primary-100); }

.band--ink .lead { color: var(--primary-300); }

.band--ink .link { color: var(--primary-300); }

.band--ink .link:hover { color: var(--paper-50); }

/* Pick a question on the left, read the tab that answers it on the right. Radio inputs carry the state. */
.show {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  column-gap: 64px;
  align-items: start;
  margin-top: 48px;
}

.show__in {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  pointer-events: none;
}

.tab {
  grid-column: 1;
  display: block;
  padding: 24px 0 24px 24px;
  border-bottom: 1px solid var(--primary-300);
  border-left: 2px solid var(--primary-500);
  color: var(--primary-100);
  font-size: 24px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.tab:first-of-type { border-top: 1px solid var(--primary-300); }

.tab:hover { color: var(--paper-50); }

.panel {
  grid-column: 2;
  grid-row: 1 / span 6;
  display: none;
  padding: 48px;
  background: var(--paper-50);
  color: var(--neutral-900);
}

#q1:checked ~ .tab[for="q1"],
#q2:checked ~ .tab[for="q2"],
#q3:checked ~ .tab[for="q3"],
#q4:checked ~ .tab[for="q4"],
#q5:checked ~ .tab[for="q5"],
#q6:checked ~ .tab[for="q6"] {
  border-left-color: var(--paper-50);
  color: var(--paper-50);
  font-weight: 600;
}

#q1:focus-visible ~ .tab[for="q1"],
#q2:focus-visible ~ .tab[for="q2"],
#q3:focus-visible ~ .tab[for="q3"],
#q4:focus-visible ~ .tab[for="q4"],
#q5:focus-visible ~ .tab[for="q5"],
#q6:focus-visible ~ .tab[for="q6"] {
  outline: 2px solid var(--paper-50);
  outline-offset: 2px;
}

#q1:checked ~ .panel[data-for="q1"],
#q2:checked ~ .panel[data-for="q2"],
#q3:checked ~ .panel[data-for="q3"],
#q4:checked ~ .panel[data-for="q4"],
#q5:checked ~ .panel[data-for="q5"],
#q6:checked ~ .panel[data-for="q6"] {
  display: block;
  animation: rise 240ms var(--ease);
}

@keyframes rise {
  from { opacity: 0; }
  to { opacity: 1; }
}

.panel__q { display: none; }

.panel__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--paper-300);
  color: var(--paper-700);
  font-size: 14px;
}

.panel__top b {
  color: var(--primary-500);
  font-weight: 600;
}

.panel__lead {
  margin: 24px 0;
  font-size: 20px;
}

/* Register tables: a ruled head, ruled rows, numbers to the right. */
.reg {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.reg caption {
  caption-side: bottom;
  padding-top: 12px;
  color: var(--paper-700);
  text-align: left;
}

.reg th {
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--primary-900);
  color: var(--paper-700);
  font-weight: 400;
  text-align: left;
  vertical-align: bottom;
}

.reg td {
  padding: 12px 16px 12px 0;
  border-bottom: 1px solid var(--paper-300);
  vertical-align: top;
}

.reg th:last-child,
.reg td:last-child { padding-right: 0; }

.reg .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.reg .strong { font-weight: 600; }

.reg .loss { color: var(--danger); }

.reg .gain { color: var(--success); }

.reg .never { color: var(--paper-700); }

.reg--wide {
  margin-top: 48px;
  font-size: 16px;
}

.after { margin-top: 24px; }

.sub { margin-top: 64px; }

.sub + .steps { margin-top: 24px; }

/* How a build runs: three real steps on one ink block. */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 48px;
  background: var(--primary-900);
  color: var(--paper-50);
}

.step { padding: 48px 32px; }

.step + .step { border-left: 1px solid var(--primary-700); }

.step .fig { color: var(--paper-50); }

.step__what {
  margin-top: 16px;
  font-size: 20px;
  font-weight: 600;
}

.step__fact {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--primary-700);
  color: var(--primary-300);
  font-size: 14px;
}

/* A ruled list. */
.keep {
  max-width: 75ch;
  margin-top: 32px;
  border-top: 1px solid var(--primary-900);
}

.keep li {
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-300);
}

.status {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 64px;
  align-items: start;
}

.status p {
  max-width: 36em;
  font-size: 20px;
}

.status p + p { margin-top: 16px; }

/* Footer. */
.foot {
  padding: 64px 0 32px;
  border-top: 1px solid var(--primary-700);
  background: var(--primary-900);
  color: var(--primary-300);
}

.foot__in {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 3fr);
  gap: 48px;
}

.foot .logo { color: var(--paper-50); }

.foot__say { margin-top: 8px; }

.foot h2 {
  margin-bottom: 12px;
  color: var(--paper-50);
  font-size: 14px;
  font-weight: 600;
}

.foot li + li { margin-top: 8px; }

.foot a { text-decoration: none; }

.foot a:hover { color: var(--paper-50); }

.foot__legal {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--primary-700);
  font-size: 14px;
}

.foot__legal p { max-width: 75ch; }

.foot__legal p + p { margin-top: 8px; }

/* Legal pages: a plain head and one reading column. */
.doc-head { padding: 64px 0 32px; }

.doc-head .small { margin-top: 12px; }

.prose { padding-bottom: 96px; }

.prose h2 {
  margin: 32px 0 8px;
  color: var(--primary-900);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.prose p,
.prose ul {
  max-width: 75ch;
  margin-bottom: 12px;
}

.prose ul {
  padding-left: 24px;
  list-style: disc;
}

.prose li + li { margin-top: 4px; }

.prose a { color: var(--primary-500); }

.prose code {
  font-family: var(--font);
  font-weight: 600;
  overflow-wrap: anywhere;
}

@media (max-width: 1279px) {
  .wrap { padding: 0 24px; }

  .hero,
  .strip,
  .show,
  .status { gap: 32px; }
}

@media (max-width: 768px) {
  .wrap { padding: 0 16px; }

  .nav,
  .bar .btn { display: none; }

  .bar__in {
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .sub { margin-top: 48px; }

  .h1 { font-size: 48px; }

  .lead,
  .panel__lead,
  .status p { font-size: 16px; }

  .hero {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .case { padding: 24px 16px; }

  .case__fig { grid-template-columns: minmax(0, 1fr); gap: 8px; }

  .strip { grid-template-columns: minmax(0, 1fr); gap: 24px; }

  .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }

  .band { padding: 64px 0; }

  /* The picker becomes a plain sequence: every panel shows, each under its own question. */
  .show {
    display: block;
    margin-top: 32px;
  }

  .show__in,
  .tab { display: none; }

  .panel {
    display: block;
    padding: 24px 16px;
  }

  .panel + .panel { margin-top: 16px; }

  .panel__q {
    display: block;
    margin-bottom: 16px;
  }

  /* A register table becomes a list: one block per row, each cell on its own line with its column name. */
  .reg--list thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .reg--list,
  .reg--list caption,
  .reg--list tbody,
  .reg--list tr,
  .reg--list td { display: block; }

  .reg--list tr {
    padding: 12px 0;
    border-bottom: 1px solid var(--paper-300);
  }

  .reg--list td {
    padding: 0;
    border: 0;
  }

  .reg--list td + td { margin-top: 4px; }

  .reg--list td[data-label]::before {
    content: attr(data-label) ": ";
    color: var(--paper-700);
  }

  .reg--list .num {
    text-align: left;
    white-space: normal;
  }

  .reg--wide { margin-top: 32px; }

  /* A numeric table stays a table on a phone: tighter cells, and its column heads may wrap. */
  .reg th,
  .reg td { padding-right: 8px; }

  .reg th.num { white-space: normal; }

  .steps { grid-template-columns: minmax(0, 1fr); }

  .step { padding: 32px 16px; }

  .step + .step {
    border-top: 1px solid var(--primary-700);
    border-left: 0;
  }

  .status { grid-template-columns: minmax(0, 1fr); gap: 24px; }

  .foot__in { grid-template-columns: minmax(0, 1fr); gap: 32px; }

  .doc-head { padding: 32px 0 16px; }

  .prose { padding-bottom: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}